Mold-cope-filling machine.



No. 788,601. PATENTED MAY 2 1905. J. ROOT.

MOLD COPE FILLING MACHINE.

APPLICATION FILED APR. 16. 1904.

2 BEEETB-BHEET 1.

No. 788,601. PATENTED MAY 2, 1905. J. ROOT.

MOLD COPE FILLING MAGHINE.

APPLIUATION FILED APR-16, 1904.

2 SHEETS-SHEET 2.

Z A20 ad j/7V%6i 26 I I 32 Q f J 111: UN y mm 4 NITED STATES Patented May 2, 1905.

JOHN ROOT, OF CHICAGO, ILLINOIS.

WIOLD-COPE-FILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 788,601, dated. May 2, 1905.

Application filed April 16, 1904. Serial No. 203,405.

To all whom, it mlrt l won/corn:

Be it known that I, JOHN Roo'r, a citizen of the United States of America, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mold-Cope-Filling Machines, of which the following is a specification.

My invention relates to apparatus for making castings of annular or annuloid form, such as cover rings or frames for manholes.

The main object of this invention is to provide an improved machine for filling and packing sand into the cope or cover-piece of an annular mold. I accomplish this object by the device shown in the accompanying drawings, in which Figure 1 is a top plan of a mold-lilling machine constructed according to my invention, showing the cope of a mold in position. Fig. 2 is a section on the line 2 2 of Fig. 1. Fig. 3 is a section on the line 3 3 of Fig. 1. Fig. 4 is a section on the line 4 4 of Fig. 1. Fig. 5 is a vertical section of a flask for molding annular castings, showing all of its parts assembled and showing the casting in position therein. Fig. 6 is a transverse section on the line 6 6 of Fig. 1'. Fig. 7 is an elevation of the parts shown in Fig. 1, the view being taken from the lower left-hand corner of the sheet.

The mold shown in Fig. 5 consists of a twopart flask, of which the drag is a metal chill 9, having the circular base 10 and having its inner surface of suitable shape to conform with the outer surface of the casting 11, which is shown in position. ithin the drag or chill 9 is an annular core-anchor 12, supporting the core 13, which gives shape to the interior surface of the casting. The cope is an annular metal cover fitting over and closing the annularspace at the upper ends of the drag 9 and the core-anchor 12. The cope or cover 15 has an annular space or groove 16 extending around the lower face of same and adapted to hold the sand which forms the upper part of the mold and gives shape to the top of the casting 11. The side walls of the groove 16 diverge upwardly, and the inner wall or top of the groove is provided with a plurality of downwardly projecting teeth 17 or other means for retaining the sand in the groove 16. A plurality of perforations 18 in the top wall of the cope 15 serve as vents for the escape of gases through said upper wall. The metal is poured into the mold through the gate-apertures, (shown at 19 in Fig. 1.)

In the form shown the apparatus for filling and packing the molding-sand into the cope 15 is constructed as follows: A vertically-disposed spindle 20 is revoluhly mounted on a horizontal table or platform 8. The platform 8 is provided with an annular shoulder 21, arranged concentrically of the spindle 20 and adapted to lit the annular shoulder 22 of the cope 15 for the purpose of centering such cope upon the table 8. The cope 15 is inverted and placed upon the table 8 with the groove 16 facing upward, as shown in the drawings. The spindle 20 has rigidly connected thereto near its upper end a transversely-extending member or sector 23. The sector 23 is secured to the spindle 20 by means of a tongue 24, extending through the spindle and secured therein by a wedge. The'sector 23 has rigidly mounted therein three sweeps or scrapers 25, 26, and 27, a pair of conical pressure-rollers 28 and 29, and a roughened or corrugated conical roller 30. The conical rollers 28, 29, and 30 are journaled on axes arranged radially of the spindle 20 and suitably inclined, so that the lowest element of each of the rollers is parallel to the upper surface of the cope. The sector 23 is provided with a handle 31, suitably located for rotating the sector around the axis of the shaft or arbor 20. As will be seen in Fig. 2, the first scraper 25 is partly cut away at 32 and serves to heap the sand up along the groove 16 of the cope. The roller 28 is located immediately behind the scraper 25 and serves to pack down the sand that has been piled up and evenly distributed by the scraper 25. The second scraper 26 is located behind the roller 24 and in front of the roller 29. The scraper 26 extends down flush with the upper surface of the cope 15, and the roller 29, which is also flush with the upper surface of the cope, serves to smooth the surface of the sand after the passage of the scraper 26. The brushes 33 and 34 are secured to the scraper 26 and respectively clean the surfaces of the rollers 28 and 29. The roller 30 is conical and is of suitable size to roll on the upper surface of the cope. The roller 30 is reduced in size and corrugated longitudinally for that portion 35 of its lengthwhich lies directly over the groove 16 in the cope. The sector 28 has a hopper 36 mounted thereon and adapted for discharging graphite or similar material upon the part 35 of the roller 30. The corrugations of the roller 30 serve to carry this graphite and distribute same along the surface of the sand which has been packed into the groove 16. The scraper 27 is located rearwardly of the roller and serves to smooth down any lumps or ridges of graphite deposited on the surface of the sand by the roller 30, thus insuring a smooth casting.

The operation of the device shown is as follows: The cope 15 of the mold is placed in an inverted position upon the table 8 and centered by means of the shoulder 21. The sector 23 is then connected to the shaft 20, and the molding-sand is shoveled upon the cope 15 and piled up along the channel 16. The sector is then rotated by hand in the direction of the arrow 37. As the sector rotates the sand is pushed off of the surface of the cope except the ridge, which is allowed to pile up along and above the channel 16 bv the recess 32 in the front scraper 25. Th ridge of sand is partly compressed into the channel 16 by the roller 28, and any sand remaining above the level of the upper surface of the channel 16 is scraped off by the scraper 26. The surface of the sand behind the scraper 26 is smoothed down by the roller 29. Small accumulations of sand on the surfaces of the rollers 28 and 29 are prevented by the brushes 33 and 3 1, thus avoiding the liability of pitting the upper surface of the sand in the channel 16. Since the ends of the roller 30 ride on the upper surface of the cope, said roller will rotate and the corrugations in its surface will cause a uniform quantity of graphite to be distributed alor r the upper surface of the sand. Finally, the scraper 27 serves to lay down and smooth out any lumps or ridges of graphite on such surface. After the removal of the sector 23 the cope 15 is inverted and placed over the mold, as shown in Fig. 5, the sand having first been cleared away from the gate-apertures 19.

It will be seen that numerous details of the construction shown may be altered without departing from the spirit of my invention.

What 1 claim as my invention, and desire to secure by Letters Patent, is-

1. A molding device comprising a platform having a sector pivoted thereto, said sector carrying a pair of depending sweeps and having a roller journaled between said sweeps with the lower part of its periphery above the level of the lower edges of said sweeps, and having a second roller journaled rearward of the sweeps and other roller, said second roller having the lower part of its periphery flush with the lower edges of said sweeps, substantially as described.

2. A molding device comprising a platform having a sector pivoted thereto, said sector carrying a pair of depending sweeps and having a roller journaled between said sweeps With the lower part of its periphery above the level of the lower edges of said sweeps, and having a second roller journaled rearward of the other sweeps and roller, and having the lower part of its periphery flush with the lower edges of said sweeps; and a brush secured to said sector in contact with the front part of the periphery of the rear roller, substartially as described.

3. A molding device com prising a platform having a sector pivoted thereto, said sector carrying a pair of depending sweeps and having a roller journaled between said sweeps with the lower part of its periphery above the level of the lower edges of said sweeps, and having a second roller journaled rearward of the sweeps and other roller, said second roller having the lower part of its periphery flush with the lower edges of said sweeps, the first of said sweeps having its lower middle part recessed or cut away, substantially as described.

4:. A molding device comprising a platform having a sector pivoted thereto, said sector carrying a depending sweep and a roller journaled behind said sweep and adapted for smoothing and packing the sand in an annuloid groove; and means secured to said sector and adapted to evenly distribute a powder on the sand that has been packed into said groove, substantially as described.

5. A molding device, comprising a platform having a sector pivoted thereto, said sector carrying a depending sweep and a roller journaled behind said sweep and adapted for smoothing and packing the sand in an annuloid groove; means on said sector for depositing a layer of powder on the surface of the sand packed into said groove; and means for smoothing down said layer of powder, substantially as described.

6. Amolding device, comprisinga platform having a sector pivoted thereto, said sector carrying a depending sweep and a roller journaled behind said sweep and adapted for smoothing and packing the sand in an annuloid groove; a second roller journaled in said sector in the rear of said sweep and first roller and above the level of the sand in said groove; a hopper secured to said sector above and adapted to discharge a powder on the periphery of said second roller; and means for causing the axial rotation of said second roller through the rotation of said sector on its axis, substantially as described.

7. A molding device comprising a platform having a sector pivoted thereto and having thereon means for securing an annular moldcover, concentrically of the pivotal axis of said sector, said sector carrying a depending sweep and a roller journaled behind said sweep and adapted for smoothing and packing the sand in an annuloid groove in such moldcover; a second roller journaled in said sector in the rear of said sweep and first roller and above the level of the edges of said groove, said roller being of suitable diameter at one end to bear on the cover at one side of the groove and rotate when said sector is turned about its pivotal axis; a hopper secured to said sector above the second roller and adapted to discharge its contents on the periphery of said second roller, substantially as described.

8. A molding device comprising a horizontally-disposed platform adapted to support a mold; a mem ber mounted above said platform and rotatable relatively thereof about a ver- 'tical axis; said member carrying a horizontally-disposed sweep adapted for leveling the sand in said mold, a roller journaled behind said sweep, a second sweep having its lower edge behind and below the level of said roller,

sweep and a roller, journaled behind said sweep and adapted for smoothing and packing the sand in the mold; and means secured to said member and adapted to evenly distribute a powder on the sand after the same has been packed into the mold, substantially as described.

Signed at Chicago this 20th day of February, 1904.

JOHN ROOT.

'Witnesses:

WM. R. RUMMLER, GLEN O. STEPHENS. 

